Any person wants to constantly feel safe, being in their own home, and not worry about the safety of their property. The front door with a reliable lock will be one of the main pledges of this feeling, as well as the first obstacle in the way of intruders. In fairness, it should be noted that completely perfect locking mechanisms do not exist, and they are unlikely to ever exist. In the modern world, the whole question is only how long the locking mechanism can withstand an intruder. Thus, having correctly selected the lock, it is possible to ensure the protection of the premises for the longest possible time.

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They have a rack-and-pinion unlocking device. Such a device barely reaches the lowest safety class due to the use of the simplest system. It is based on a flat key, with grooves applied along the edges at different angles, which must coincide with similar grooves on the crossbar. Due to the entry of the key into these grooves, the bolt moves, which leads to the unlocking / locking of the door. This type often has handles that are responsible for opening the door from the inside. It is they who will facilitate the work of a burglar, because with the help of a hollow tube and a fishing line such a mechanism can be opened very quickly.However, depending on the frequency and size of the grooves, the complexity of these devices can increase or decrease - some can be opened with a simple bent pin, and for others even finding the appropriate skeleton key will be a problem. Nevertheless, crossbar options remain the most common and cheapest in the territory of the Russian Federation, but experts recommend equipping interior spaces with them rather than common entrance doors.
Also a very popular product. Its improper opening will require a person to use a drill equipped with a hardened drill bit. With this tool, the pins that form the lock code are simply drilled. However, modern Russian models began to be provided by manufacturers with special "folds" with optional protection, which can successfully resist the process of drilling pins. Armored steel plates and integrated steel balls are used as reinforcing elements. Thus, knocking down the pins is difficult, and the balls will prevent the correct setting of the drill for work. Such cylindrical mechanisms already belong to the 3rd and 4th protection classes and are fully recommended for installation on metal entrance doors.
Despite the more than two-century history of the invention of such a mechanism, it has gained wide distribution (especially in the Russian Federation) relatively recently. In such a device, levers are used - i.e. special plates that are driven by the teeth of the key. The key itself is a rod with plates on which recesses are made. Even if just one notch fails, the device will not unlock.And without the exact interaction of all levers, the locking device will not open. In this case, unauthorized access can only be obtained by selecting the key. The security class increases as the plates and recesses involved in the locking / opening process increase. An important role will be played by the material from which the plates and rods are made, because thanks to it the chance of forging a key will decrease.
These devices are the most modern and are very expensive. They do not come with keys in the usual sense - instead, codes, remotes or magnetic cards are used. The "key" can also be the biometric data of a person, which is unique for each individual - fingerprints, the pattern of the iris of the eye, and even the timbre of the voice.
In Russia, the burglary resistance class is indicated in the passport of the device itself and varies from 1 to 4, where the first is the most vulnerable. In Western countries, this parameter has a letter marking: A, B, C, D, where, respectively, the weakest is "A". The normative description of these technical indicators in the Russian Federation is regulated by the State Standard No. 5089 of 2003. According to this document, the following classes are distinguished in the Russian Federation:
IMPORTANT! According to the RD (guiding documents) of the private security of the Ministry of Internal Affairs of the Russian Federation, it is recommended to install locks in the following combination: one device with the 4th class, the second device with the 2nd class, where the first option is lever, and the second is cylinder.
This indicator is also strongly related to the concept of burglar resistance and refers to the number of keys that will be required for selection in order to achieve a successful opening. The number of all options will be the sum of mathematically possible combinations of pins, plates, grooves, discs for each specific type of locking product.
In Russia, there is a division into two degrees: the first provides from 25,000 to 80,000 variations, and the second - from 100,000 or more. It is always worth remembering that for each particular model, one single type of key and no other should be suitable. From this it is clear that the combination of the degree of secrecy and the class of burglary resistance will make up the final strength of the lock. These indicators should complement each other.For example, a door lock cannot have the 4th class of burglary resistance, and the number of combinations for it can be only 20,000 options. In theory, the release of such a mechanism is possible, but impractical.
It will not be possible to repeat such a test at home - this will require special laboratory specifications, which are fixed by the above GOST. The essence of the test is to select the keys to a particular model and find out the maximum number of combinations. Also, with the help of various tools, the physical strength of the lock is checked. All operations are carried out on time. The result of the tests is the compilation of a protocol, through which the class of burglary resistance and the degree of secrecy indicated in the model passport are assigned.
As mentioned above, it is preferable to use fixtures with a class from 2nd to 4th for the input group (information about this is indicated in the product passport). The use of the 1st class contradicts the RD of the private security of the Ministry of Internal Affairs of the Russian Federation, therefore, the police unit will not take an apartment with such a device on the front door under protection even under an agreement, regardless of the price.
A good device should combine durability, reliability and strength, and its body should not have cracks and rust marks. Also, it should be as close as possible to the door leaf and door frame. In this matter, much will depend on the steel sheets installed in the canvas. With a sheet thickness of less than 4 millimeters, a massive locking device can simply deform the entire structure. Some homeowners prefer to use locks with long and massive bolts.This method, to some extent, can increase security, but a massive lock will have a negative effect on the canvas and it will quickly wear out.
Experts believe that the best choice for the entrance group will be a level locking product. The mechanism itself will be inside, i.e. it will be very difficult to get to it physically. In any case, the best option is to install two types of locking devices - level and cylinder. The recommended number of crossbars is from three or more, it is better if they are equipped with armor plates with a protection class of at least the third.
A good option could be the installation of a combined lock, in which a double mechanism will be installed (cylindrical and level in one product, which will complement each other in parallel). The essence of his work will be as follows: when you try to hack one part of the product, the second will immediately block the entire mechanism completely automatically. Moreover, with this order of operation, the attacker will have to simultaneously work on unlocking both mechanisms, which is almost impossible.
IMPORTANT! It must always be remembered that the change of the lock or the fact of its installation again should not be advertised to unauthorized persons, and even more so for the demonstration of new keys (even fleetingly). For an experienced burglar, at times, one glance at a key is enough to remember its structure, determine the type of lock, and then make a master key or a full-fledged duplicate.
In life, there are situations when wooden doors require lock protection. For them, options for overhead devices are not suitable if important things are stored behind this door.Thus, standard mortise models will be the best solution. And despite the fact that such locking mechanisms tend to slightly weaken the web at the site of the mounting insert, they will undoubtedly have more practical advantages. Their main advantages include:
In this situation, the type of door will play an important role - it can be too massive or, conversely, very fragile. As a result, it will be necessary to choose a competent way to install the locking mechanism in order to maintain the strength of the entire structure, while ensuring overall safety. Again, it should be noted that hinged products are installed on wooden structures that are not designed to store especially valuable items - this is due to their low burglary resistance. However, an overlay for a wooden door can play an optimal practical role if placed from the inside and used as an additional protective measure.
Mortise products for wooden entrance groups are integrated directly into the canvas, and on the outside there is only a small keyhole or “turntable” with a latch.More reliable models may have not only a latch, but also a fairly massive bolt, although one latch will be quite enough for an office / interior door, especially if you do not often have to lock the entrance tightly. For the type of door under consideration, it is recommended to use two basic types of mortise models:
In the first model, the latch is triggered when the handle is pressed - it is retracted into the structural case, and the opening opens. When the handle is returned to its original position, the latch will extend and lock into the strike plate located on the frame. The magnetic model has an electromagnet on the striker, which, when in contact with the latch sensor, presses the latter to itself and holds the door in the “closed” position. However, such devices will need additional electrical power.
Regardless of what type of door product the lock is selected for, when buying, you need to follow a number of mandatory rules:
Immediately before buying the product, you should carefully look for the absence of mechanical flaws, damage to the case, signs of corrosion or chips. The presence of these traces will indicate clear signs of marriage or improper storage of the goods, which will undoubtedly negatively affect its operation. The mechanical part is also subject to testing - it must be unlocked / locked at least 10 times, while listening to the movement of internal parts. The move should be carried out smoothly, without jamming and the occurrence of suspicious squeaks.
The company has been operating since 1993 and is located in Moscow. The main goal of the company is the development and production of the latest competitive types of door fittings, which should have undeniable advantages over existing ones on the market.To date, a number of manufactured products really have no analogues in Russia, which is confirmed by numerous patents of the invention. The production area is about 3000 square meters. m. and includes: design department, tool production, metalworking production, foundry section (for casting parts from zinc alloy), powder coating section.

The company is engaged in the production of high-quality fittings and is equipped with modern equipment, which makes it possible to carry out a full cycle of manufacturing finished products, up to the delivery of goods. The range consists of: lever, cylinder, interior, disk, combined mechanisms and more. The range is more than rich - five hundred modifications of mortise and overhead products.

The company has been engaged in the production of locks and hardware since 2005. The company occupies more than 12,000 square meters. m. of production space involved in the full cycle of production of finished goods. The tool production and the design department of the factory make it possible to increase the range of manufactured goods every year, responding flexibly to the conditions of the Russian market. A well-established quality control system and well-thought-out technical solutions allow goods to look worthy against competitors, both in terms of quality and cost.These factors ensure the annual growth in sales over the past few years at the level of 50-70%.

The company has been operating in this profile for more than 20 years. The production of door locks is one of the leading directions of the company. Due to the fact that we have our own production, the ratio of quality and price of goods is optimal. There is a wide range of lock products in various price categories. To ensure the safety of the garage, warehouse or premises, durable models are made that have maximum structural reliability and resistance to external influences. A wide range of door locks allows you to choose the best option for each case. For interior doors, a lock handle will be an excellent solution. An innovative release technology is used.

The company was founded in 1991. Field of activity: production and sale of locks and hardware. Types of products: heavy locks, window and door fittings. Additional service: production of keys, delivery and installation of products. Covered territory: the entire territory of the former USSR. The models developed and manufactured at the factory are well known in the international market and have proven themselves as products of high reliability and burglary resistance.The company produces a wide range of mortise and overhead locks with a variety of designs and functional purposes.

The company is one of the largest manufacturers of locks throughout the Russian Federation. Works since 2004. Products are characterized by increased reliability, precision of the mechanism and durability. Simple installation allows any person to perform the necessary work using the simplest tools. The plant has high production capacity, equipped with a modern technical base. This ensures uninterrupted serial production of lock products. Compliance of certain parameters of goods with the current GOSTs is very strictly controlled. The company guarantees their invariability in each individual batch.

The company's own production base is equipped with modern equipment. Quality control is carried out at each stage of production. All products are certified and correspond to the declared characteristics. Experienced, qualified workers work in the state. There is a 1 year warranty on any product. Specialization is focused on the production of electronic door locks. The company has been present on the market for about 4 years and during this time has established itself as a supplier of reliable and high-quality products at affordable prices.The catalog contains a large selection: with access by electronic card, with a password, with remote control, with access by fingerprint, coded and hidden, as well as accessories for them. The products are simple and easy to use.

The company was founded in 1990 in Leningrad. Specializes in the manufacture of universal dividing heads, locks, door fittings. Assortment: UDG, locks, handles, latches, hooks, bolts. Products are famous for their reliability, ergonomics and functionality. Deliveries are carried out in all regions of Russia - from the Baltic to the Far East. The production facilities are constantly being modernized, and the product offer is expanding. A permanent partner is the German company MTW Endoskopie.

The purchase of the considered devices manufactured in the Russian Federation requires a very careful approach and paying attention to the smallest details. The main function of any door is to provide security, comfort and privacy in the serviced premises. A significant role in this is played by door locks, the reliability of which should not cause any doubts. The level of protection of the protected room depends on what type of lock is preferred.